ASR Audio Systems Friedrich Schaefer, D-35745 Herborn, Germany +49 / 2772 – 42 905
High End Integrated Amplifier ASR Emitter I and II version 2009 on Page 16
5.6
The Emitter is not reacting on remote control signals
At first please check if the Emitter is switched OFF- in this case the remote will not work.
Then check if the led on the remote controller is flashing green when you push a button.
If not please check the battery.
5.7
Noise from the main unit while warming up/cooling down
The main unit of the ASR Emitter is assembled with acrylic glass and heat sinks of aluminium.
These two materials expand differently during the warming up/cooling off-phase of the amplifier.
This may result in some crackling noises during warming up or cooling down.
Solution : loosen the screws (located in the heat sinks) of the front- and/or back plate of the ASR
Emitter.
5.8
Just in case: repair
If all the help we provided in this trouble-shooting-section of the manual did not help to make
the ASR Emitter operate properly, please contact your authorized ASR Audio Systems dealer.
Please pack the units into the original ASR boxes and with the original ASR packing accessories.
Your authorized ASR Audio Systems dealer will take care of your unit and will repair it properly.
6.0
Facts about the ASR Emitter
6.1
Function of the ASR Emitter main unit
Most of the design of the Emitter is totally different from other amplifiers !
The Emitter is more a main amp with volume Control and input switches.
It is not necessary to have a additionally preamplifier !
The internal signal-processing is unbalanced, balanced signals are converted !
The signal is passing the input relays and is routed straight to the relays volume control step
switch to be controlled in its level. Till level 50 the signal is attenuated, in 51 the signal goes
unchanged through the volume control. From level 52 on the gain is regulated.
The amplifier has three stages :
1)
In the input stage is a FET-input-operational amplifier IC.
2)
The driver stage is made with very fast Mos Fet transistors.
3)
The output stage is made with 2x3 (2x5 at EM II ) high power audio Mosfets.
Every stage has a separate supply voltage. Each voltage can be controlled with Leds on the
Emitter main board and in the separate power supplies.
A microcontroller controls the operation of the ASR Emitter. The microcontroller is programmed
with the control program and can be reprogrammed with newer versions.